Hi Bruce,

Thanks for your response. When I try to use load_mgh on an mgh file I get an endless output of zeroes that I need to cancel, and when I try to use MRIread like this:


result = MRIread('filepath/file.mgh')

err = MRIwrite(result, 'filepath/file_new.mgh')

It is successful, but the resulting file is 4x larger than the original file.mgh, which is large enough that my editor won't open it so I can't check for the tags. Am I using the commands correctly?

Thanks,
Sarah




From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu> on behalf of Bruce Fischl <fischl@nmr.mgh.harvard.edu>
Sent: Wednesday, October 19, 2016 2:58 PM
To: Freesurfer support list
Subject: Re: [Freesurfer] Freesurfer Matlab scripts for reading and writing files
 
Hi Sarah

I believe that both load_mgh and MRIread don't load any tags, so if you
use them to load, then MRIwrite or save_mgh to write back to disk all the
tags should be gone.

cheers
Bruce

On Wed, 19 Oct 2016, Keefe, Sarah wrote:

>
> Hi,
>
>
> I am part of the Freesurfer anonymization project mentioned in an earlier thread- sorry to start a new
> thread but I was unable to reply to the previous one. We are trying to find out how to remove all
> provenance information from .mgh files.
>
>
> I am having trouble reading .mgh files into Matlab in order to remove the tags at the end of the file.
> How would we read and write the tags section of an mgh file in Matlab? Would that be done using any
> of the Freesurfer Matlab scripts? I haven't had success with viewing or removing tags using load_mgh or
> MRIread - MRIread displays header information only.
>
>
> Thanks so much,
>
> Sarah
>
>  
>
>
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